EP0006007A1 - Mécanisme réducteur de vitesse pour béquille de stationnement d'une semi-remorque - Google Patents

Mécanisme réducteur de vitesse pour béquille de stationnement d'une semi-remorque Download PDF

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Publication number
EP0006007A1
EP0006007A1 EP79301004A EP79301004A EP0006007A1 EP 0006007 A1 EP0006007 A1 EP 0006007A1 EP 79301004 A EP79301004 A EP 79301004A EP 79301004 A EP79301004 A EP 79301004A EP 0006007 A1 EP0006007 A1 EP 0006007A1
Authority
EP
European Patent Office
Prior art keywords
gear
shaft
secured
engagement
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP79301004A
Other languages
German (de)
English (en)
Inventor
William D. Walther
Charles D. Phillips
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dayton Walther Corp
Original Assignee
Dayton Walther Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dayton Walther Corp filed Critical Dayton Walther Corp
Publication of EP0006007A1 publication Critical patent/EP0006007A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
    • B60S9/14—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring
    • B60S9/16—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring for operating only on one end of vehicle
    • B60S9/18—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring for operating only on one end of vehicle mechanically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/58—Auxiliary devices
    • B60D1/66—Props
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19293—Longitudinally slidable
    • Y10T74/19298—Multiple spur gears
    • Y10T74/19307—Selective

Definitions

  • the present invention relates to landing gear mechanisms for semi-trailers and more particularly, to a mechanism for providing two speed ratios between the manually rotated drive shaft and the driven shaft which engages the raising and lowering mechanism for the landing gear.
  • the present invention overcomes the above described difficulties and disadvantages associated with such prior art devices by providing a geared speed reduction crank mechanism which permits the pairs of gears on each shaft to be positioned substantially immediately adjacent one another and thus reduce the'axial r travel of the drive shaft necessary to change speed ratios and thus reduce the width of the housing. It includes a support housing, a pair of vertically spaced horizontally disposed shafts mounted for rotation in the housing, one of the shafts having an end portion extending outwardly from the housing and having a manual crank secured thereto and the other of the shafts engaging means for raising and lowering the landing gear.
  • First and second gears are secured to the driven shaft and a third gear is secured to the drive shaft and is engageable with the first gear on the driven shaft.
  • a fourth gear having both internal and external teeth is mounted for independent rotation on the drive shaft with the external teeth being-engageable with the second gear and the internal teeth being engageable with the third gear, also supported on the drive shaft. Means is provided for maintaining the fourth gear in substantially laterally fixed position.
  • the drive shaft is axially movable between a position in which the third gear is in driving engagement with the first gear while the fourth gear is free to rotate and a position in which the third gear drivingly engages the fourth gear and the fourth gear drivingly engages the second gear which is supported on the driven shaft.
  • the means for mounting the fourth gear for independent rotation on the drive shaft preferably includes a cylindrical spacer secured to the drive shaft adjacent the third gear and having its outside diameter slightly less than the inside diameter of the internal teeth on the fourth gear, so that the fourth gear remains substantially concentrically positioned on the drive shaft while free to rotate, and will thus be in substantial alignment with the gear teeth oh the third gear when the drive shaft is axially shifted.
  • the landing gear to which the present invention pertains is secured to the frame structure of a conventional semi-trailer by means of a bolting plate 10 which is secured by a plurality of bolts extending through the holes 12.
  • a hollow rectangular cross section housing 14 is welded to the bolt plate 10 and extends downwardly therefrom to support the wheels 16 through the axial housing 18.
  • Contained within housing 14 is a mechanism (not shown) which supports and extends the telescoping extension 20 in the bottom of the housing 14, so that the wheels 16 can be raised or lowered from the ground and when in engagement with the ground can cause the semi-trailer to be lifted off of the tractor so the two can be separated.
  • the mechanism contained within the housing 14 for causing telescoping movement of extension 20 forms no part of the present invention, although it is driven thereby in the manner illustrated and described in the above referred to commonly assigned patent which is incorporated herein by reference thereto.
  • the gear speed reduction mechanism 30 of the present invention is secured to the opposite side of housing 14 from the plate 10 and has a drive shaft 32 which extends from both sides of the housing 34. Secured by a pin 36 to the outer end of drive shaft 32 is a manual crank arm 38. It is to be noted that the reason for having the drive shaft 32 extend outwardly from both sides of the housing 34 is in order to permit the crank mechanism 30 to be secured to either the right or left hand side of the landing gear assembly and thus permit operation of the landing gear from the right or left hand side of the semi-trailer, as desired.
  • Coupling member 42 is a long bar which extends across the width of the semi-trailer in order to transfer the rotation of driven shaft 40 to the opposite landing gear (not shown) positioned on the other-side the semi-trailer and which has the same telescuping mechanism as in housing 14.
  • a first gear 44 is secured to driven shaft 40 for rotation therewith within housing 34 and a second gear 46 is integrally formed therewith and thus also is secured for rotation with driven shaft 40.
  • Shaft 40 has its outer end portion mounted in bearing member 48 in order to provide freedom of rotation thereof.
  • a third gear 50 is secured to drive shaft 32 for rotation therewith.
  • a fourth gear 52 having both internal teeth 54 and external teeth 56 is mounted for independent rotation on a cylindrical spacer portion 58 formed as an extension of gear 50. Cylindrical spacer portion 58 is of slightly smaller diameter than the internal diameter of teeth 54 and thus permits the fourth gear 52 to rotate freely about the spacer portion 58 while being maintained substantially concentric with the drive shaft 52.
  • Third gear 50 is meshingly engageable with first gear 44 and the internal teeth 54 on the fourth gear 52.
  • the fourth gear 52 is maintained in a substantially laterally fixed position relative to the housing, by a retainer member 60 secured to the inside of housing 34 on one side of the fourth gear 52 and by an annular spacer member 62 secured to the side of first gear 44.for rotation therewith.
  • the separation between annular member 62 and retainer member 60 is slightly larger than the width of fourth gear 52 and allows the fourth gear to float laterally a small amount so that it is not always in engagement with the retainer member and annular member in order to reduce friction therebetween.
  • Drive shaft 32 is axially movable as shown in Figures 4 and 5, between a position in which third gear 50 is in driving engagement with first gear 44 and a position in which gear 50 is in driving engagement with the internal teeth 54 of fourth gear 52.
  • a pair of annular grooves 64 and 66 are provided on drive shaft 32. The grooves are engageable with a spring clip 68 held in place by a retainer 69 along the inside surface of housing 34 in a manner such as referred to in the above mentioned commonly assigned patent.
  • Grooves 64 and 66 are so positioned axially along drive shaft 32 that when third gear 50 is in alignment with first gear 44 the spring clip will be in groove 66 and when the third gear 50 is engaged with fourth gear 52 spring clip 68 will be positioned in groove 64; the latter position being illustrated in figure 5 in enlarged proportions from that shown in figure 4.
  • the spring clip 68 is so designed that it easily yields upon manual application of axial force to drive shaft 32 to permit the operator to select his desired speed ratio.
  • the clip 68 and its retainer 69 are preferably made according to the teachings of U.S. patent No. 3,892,141.
  • the operator would normally select the high speed ratio when the landing gear is off of the ground and is initially being lowered, in order to permit the wheels-16 to be quickly lowered to the ground.
  • this is accomplished by engaging the third gear 50 with the internal teeth of fourth gear 52 by pulling drive shaft 32 to the right as shown in figure 4.
  • This causes the fourth gear to be driven upon rotation of drive shaft 32 and which in turn drives gear 46 to rotate the driven shaft 40 at a higher speed of rotation than drive shaft 32.
  • the operator then moves shaft 32 to the left as illustrated in figure 4 so that third gear 50 will engage first gear 44.
  • the speed ratio is then changed so that driven shaft 40 rotates much slower than drive shaft 32 and thus increases the leverage which the operator can apply in order to lift the semi-trailer off of its coupling to the tractor.
  • gear 50 when gear 50 is in engagement with internal teeth 34 of gear 52, the teeth are in engagement around the entire periphery of gear 50, much like a simple splined shaft. Unlike a splined shaft and mating part, however, it is necessary to have the teeth of gear 50 generated as gear teeth since they must engage the teeth of gear 44 in a conventional gear driving manner. It is also preferable to have the internal teeth 54 of gear 52 generated as an involute spline, although it is not essential since these teeth need not act as conventional gear teeth but merely mate in relative fixed position with the teeth on gear 50.
EP79301004A 1978-05-30 1979-05-30 Mécanisme réducteur de vitesse pour béquille de stationnement d'une semi-remorque Withdrawn EP0006007A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/910,832 US4187733A (en) 1978-05-30 1978-05-30 Speed reduction mechanism for semi-trailer landing gear
US910832 1978-05-30

Publications (1)

Publication Number Publication Date
EP0006007A1 true EP0006007A1 (fr) 1979-12-12

Family

ID=25429382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79301004A Withdrawn EP0006007A1 (fr) 1978-05-30 1979-05-30 Mécanisme réducteur de vitesse pour béquille de stationnement d'une semi-remorque

Country Status (4)

Country Link
US (1) US4187733A (fr)
EP (1) EP0006007A1 (fr)
CA (1) CA1103958A (fr)
IT (1) IT7967620A0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398705A2 (fr) * 1989-05-19 1990-11-22 Kysor Industrial Corporation Mécanisme à engrenage pour béquille de semi-remorques
EP0513973A2 (fr) * 1991-04-16 1992-11-19 Jost International Corp. Chariots de supports pour semi-remorques
US5199738A (en) * 1991-04-16 1993-04-06 Jost International Of Grand Haven Michigan Landing gear for semitrailers
EP0675029A1 (fr) * 1994-03-31 1995-10-04 Jost International Dispositif de support pour semi-remorgues
EP2523834A4 (fr) * 2010-01-15 2017-12-13 Jari Toppinen Dispositif auxiliaire pour l'utilisation du mécanisme de levage à vis d'une béquille de semi-remorque et disposition correspondante

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466637A (en) * 1981-09-22 1984-08-21 Nelson Carl A Power drive mechanism for trailer landing gear
US4823632A (en) * 1987-08-12 1989-04-25 Kransco Gear box assembly
US4796864A (en) * 1987-10-26 1989-01-10 Stallion Trailer Kits, Inc. Spring loaded drop foot trailer jack
DE3852955T2 (de) * 1988-09-27 1995-06-29 Mattel Power Wheels Inc Spielfahrzeuggetriebe.
US5542647A (en) * 1995-03-20 1996-08-06 Huetsch; Larry C. Two-speed jack
US6099016A (en) * 1997-07-21 2000-08-08 The Binkley Company Landing gear
DE19836635C5 (de) * 1998-08-13 2005-07-14 Jost-Werke Gmbh & Co. Kg Vorrichtung zum Abstützen eines Aufliegers eines Sattelschleppers
AU757765B2 (en) * 1999-03-04 2003-03-06 Razor International Pty Ltd Powered trailer jacking system
ATE394279T1 (de) 1999-03-04 2008-05-15 Razor Internat Pty Ltd Elektrische anhängerabstützung
US20010020781A1 (en) 2000-01-26 2001-09-13 Vandenberg Ervin Trailer landing gear
US6684726B2 (en) * 2000-04-10 2004-02-03 Jost-Werke Gmbh & Co. Kg Support device for articulated vehicle trailer
US7055859B2 (en) * 2002-04-02 2006-06-06 The Holland Group, Inc. Landing gear and method of assembly
ES2354496T3 (es) 2002-04-02 2011-03-15 Saf-Holland, Inc. Tren de estacionamiento y método de ensamblaje.
US6926305B2 (en) 2002-05-10 2005-08-09 Jeffrey Daniel Air, electric and hydraulic landing gear jack
US7021659B2 (en) * 2002-12-04 2006-04-04 Mcgrew David L Semi-trailer landing gear ratcheting apparatus
US20040108702A1 (en) * 2002-12-04 2004-06-10 Mcgrew David L. Folding ergonomic wheel apparatus
US6893006B2 (en) * 2003-02-18 2005-05-17 Cequent Trailer Products, Inc. Multi-speed drop leg mechanical jack for use with a trailer
US7325786B2 (en) * 2003-02-18 2008-02-05 Cequent Trailer Products, Inc. Multi-speed drop leg mechanical jack for use with a trailer
US7258363B2 (en) * 2004-09-01 2007-08-21 Baxter Properties, L.L.C. Landing gear assembly for a trailer
US7240921B2 (en) * 2004-09-01 2007-07-10 Baxter Properties, L.L.C. Landing gear assembly for a trailer
US7429061B2 (en) * 2006-02-09 2008-09-30 Ingersoll-Rand Company Drive mechanism and method of operating the same
US8051545B2 (en) * 2006-04-27 2011-11-08 SAF Holland, Inc. Landing gear and method of assembly
US8678471B2 (en) 2007-01-19 2014-03-25 Rieco-Titan Products, Inc. In-line jack
US20080315570A1 (en) * 2007-06-19 2008-12-25 Baxter Properties, Llc Reduced Cost Master/Slave Trailer Landing Gear Apparatus
PL2233376T3 (pl) * 2007-12-11 2013-03-29 Saf Holland Xiamen Co Ltd Urządzenie podtrzymujące
CN102717779A (zh) * 2012-05-14 2012-10-10 广东富华工程机械制造有限公司 支腿内方管底部收口结构
CN102951132B (zh) * 2012-11-09 2015-04-22 广东富华工程机械制造有限公司 半挂车支腿电动齿轮箱
US10343654B2 (en) * 2017-04-27 2019-07-09 Lippert Components, Inc. Convertible tongue jack
US10857983B2 (en) * 2017-12-13 2020-12-08 Kyle R. Gillin Leveraged trailer lift

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135135A (en) * 1962-03-05 1964-06-02 West Michigan Steel Foundry Co Reduction gear crank for semi-trailer landing gear legs and the like
US3632086A (en) * 1969-05-22 1972-01-04 Haamann Winden Hebezeug Landing gear for semitrailers or the like
US3892141A (en) * 1973-11-19 1975-07-01 Dayton Walther Corp Landing gear with shaft detent clip retainer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747422A (en) * 1952-10-30 1956-05-29 Dayton Steel Foundry Co Two-speed landing gear for trailers
US3010699A (en) * 1959-09-03 1961-11-28 Binkley Mfg Company Landing gear for trailer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135135A (en) * 1962-03-05 1964-06-02 West Michigan Steel Foundry Co Reduction gear crank for semi-trailer landing gear legs and the like
US3632086A (en) * 1969-05-22 1972-01-04 Haamann Winden Hebezeug Landing gear for semitrailers or the like
US3892141A (en) * 1973-11-19 1975-07-01 Dayton Walther Corp Landing gear with shaft detent clip retainer

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0398705A2 (fr) * 1989-05-19 1990-11-22 Kysor Industrial Corporation Mécanisme à engrenage pour béquille de semi-remorques
EP0398705A3 (fr) * 1989-05-19 1992-07-08 Kysor Industrial Corporation Mécanisme à engrenage pour béquille de semi-remorques
EP0513973A2 (fr) * 1991-04-16 1992-11-19 Jost International Corp. Chariots de supports pour semi-remorques
US5199738A (en) * 1991-04-16 1993-04-06 Jost International Of Grand Haven Michigan Landing gear for semitrailers
EP0513973A3 (fr) * 1991-04-16 1994-01-19 Jost International Corp
EP0675029A1 (fr) * 1994-03-31 1995-10-04 Jost International Dispositif de support pour semi-remorgues
US5538225A (en) * 1994-03-31 1996-07-23 Jost International Of Grand Haven Michigan Landing gear for semitrailers
US5676018A (en) * 1994-03-31 1997-10-14 Jost International Of Grand Haven, Michigan Landing gear for semitrailers
EP0845396A1 (fr) * 1994-03-31 1998-06-03 Jost International Dispositif de support pour semi-remorques
CN1103706C (zh) * 1994-03-31 2003-03-26 乔斯特国际有限公司 半挂车用双速起落架装置和多速起落架装置
EP2523834A4 (fr) * 2010-01-15 2017-12-13 Jari Toppinen Dispositif auxiliaire pour l'utilisation du mécanisme de levage à vis d'une béquille de semi-remorque et disposition correspondante

Also Published As

Publication number Publication date
IT7967620A0 (it) 1979-03-26
US4187733A (en) 1980-02-12
CA1103958A (fr) 1981-06-30

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB

17P Request for examination filed
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820411

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PHILLIPS, CHARLES D.

Inventor name: WALTHER, WILLIAM D.